I plan to install some of Brett's favorites on my computer (Visits and Dropzone for sure) and make my row of menu bar items even longer.

Here are my current menu bar items, from left to right:

1. Fantastical. A calendar and reminder application that works with Google Calendars.

2. Airmail. The best email app for Gmail users. It takes a long time to load the email when I launch it in the morning, but it's much speedier than web-based Gmail. And it's only $2!

3. Tweetbot. It's not a very intuitive Twitter application (I still have trouble doing certain things because the interface hides a lot of stuff and puts things in the wrong place) but it's still better than any other Twitter app I've tried.

4. Google Drive. I switched from Word to Google Docs years ago. Google Drive, where I store my writing, behaves like an ordinary folder on my computer.

I recently had a chance to visit NASA's Jet Propulsion Laboratory with Miles O'Brien. At the NASA center in Pasadena, engineers are readying for the long-anticipated landing of the Mars Curiosity rover on Aug. 5. During our visit, we met with the team behind a cool new iOS app from JPL: NASA's Spacecraft 3D, an augmented reality application that allows users to "learn about and interact with a variety of spacecraft that are used to explore our solar system, study Earth, and observe the universe."

Using a printed AR Target and the camera on your mobile device, you can get up close with these robotic explorers, see how they move, and learn about the the engineering feats used to expand our knowledge and understanding of space. Spacecraft 3D will be updated over time to include more of the amazing spacecraft that act as our robotic eyes on the earth, the solar system and beyond!